CN217164850U - Concentrating machine - Google Patents

Abstract

The utility model relates to the technical field of gravity separation equipment, in particular to a separator and an intelligent separation method, the separator is characterized by comprising a separation tank with a feed inlet, a driving mechanism arranged at the top of the separation tank, a transmission shaft driven by the driving mechanism and arranged at the center of the separation tank, a high-density mineral separation mechanism arranged at the bottom of the transmission shaft, and a medium-low density mineral separation mechanism arranged above the high-density mineral separation mechanism; the high-density mineral sorting mechanism comprises a first impeller arranged at the bottom of a transmission shaft; the medium-low density mineral sorting mechanism comprises a damping component arranged on the upper portion of the first impeller and used for reducing the motion intensity of ore pulp, and at least one overflow port arranged on the upper portion of the ore dressing tank. This application not only has advantages such as simple structure, ore dressing are efficient, operating stability is good, and the concentrator uses water as the ore dressing medium, need not to add chemical agent and can realize the ore dressing, satisfies green demand.

Description

Concentrating machine

Technical Field

The utility model relates to a gravity mineral processing equipment technical field especially relates to a concentrator.

Background

Gravity separation, called gravity separation for short, is a separation method in which mineral particles of different densities (particle sizes) are subjected to layered transfer under the combined action of multiple composite forces such as gravity (or centrifugal force) and viscous resistance, and are loosened by the aid of fluid buoyancy, power or other mechanical forces in a certain medium flow (usually water, heavy liquid or heavy suspension) according to density differences among minerals, so that useful minerals and gangue are separated. The mineral separation method is widely applied, but mineral resources are less and less along with the increasingly deep development of the mineral resources, and the existing gravity separation equipment has the problem of low mineral separation precision, so that the further development and utilization of the mineral resources are seriously hindered.

SUMMERY OF THE UTILITY MODEL

The features and advantages of the present invention are set forth in part in the description which follows, or may be obvious from the description, or may be learned by practice of the invention.

For overcoming prior art's problem, the utility model provides a concentrator that ore dressing precision is higher, and can be applied to in the little mineral of separation density difference selects other flow, have advantages such as simple structure, ore dressing are efficient, operating stability is good, need not to add chemical agent and can realize the ore dressing, satisfy modern green demand.

In order to achieve the above purpose, the utility model provides a technical scheme is:

a concentrating machine comprises a concentrating tank with a feeding hole, a driving mechanism arranged at the top of the concentrating tank, a transmission shaft driven by the driving mechanism and arranged at the center of the concentrating tank, a high-density mineral sorting mechanism arranged at the bottom of the transmission shaft, and a medium-low density mineral sorting mechanism arranged above the high-density mineral sorting mechanism;

the high-density mineral sorting mechanism comprises a first impeller arranged at the bottom of a transmission shaft;

the medium-low density mineral separation mechanism comprises a damping assembly, at least one overflow port and a middling box, wherein the damping assembly is arranged on the upper portion of the first impeller and used for reducing the movement strength of ore pulp; the damping assembly includes a buffer member disposed at an upper portion of the first impeller.

Preferably, a plurality of first through holes are formed in the buffer member.

Preferably, the damping assembly further comprises an isolation tube which is arranged above the buffer piece and sleeved outside the transmission shaft; the isolation pipe is connected with the ore dressing tank through an adjusting piece.

Preferably, a first flow guide part is arranged below the buffer part; the inner diameter of the first flow guide piece gradually increases from top to bottom along the vertical direction.

Preferably, the bottom end of the first flow guide piece is provided with a second through hole.

Preferably, the high-density mineral sorting mechanism further comprises a second annular flow guide piece arranged at the bottom of the transmission shaft; the inner diameter of the second flow guide piece is unchanged along the vertical direction, or the inner diameter of the second flow guide piece gradually increases from top to bottom along the vertical direction.

Preferably, the first impeller comprises a hub coaxially driven with the transmission shaft, and at least two blades arranged along the outer wall of the hub; the installation angle between the blade and the cross section of the hub is 30 ︒ -120 ︒.

Preferably, the vertical section of the blade is polygonal; one side of the polygon is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

Preferably, the vertical section of the blade consists of at least 2 different kinds of polygonal sheets; one edge of one polygonal sheet is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

Preferably, the vertical section of the blade consists of at least 2 polygonal sheets with different areas; one edge of one polygonal sheet is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

Preferably, the blade is followed the outer wall of wheel hub is the heliciform, just the width of blade keeps unanimous from top to bottom, or the width of blade is crescent from top to bottom.

Preferably, the device also comprises an ore discharge mechanism arranged at the bottom of the ore dressing tank; the ore discharging mechanism comprises a truncated cone fixed with the ore dressing tank, a flange plate arranged on the bottom end of the truncated cone, a central cone arranged on the flange plate and provided with a fixing hole in the middle, an aligning device penetrating through the fixing hole and connected with the central cone, a connecting part arranged below the flange plate and communicated with the bottom of the ore dressing tank, and a discharging assembly arranged at the bottom end of the connecting part; the bottom of each connecting part and the bottom of each cone frustum are provided with at least one visible window; the discharging assembly comprises a shell communicated with the connecting portion, a second impeller arranged on the shell, a discharging motor driving the second impeller to rotate and arranged on the shell, and a discharging port arranged at the bottom of the shell.

Preferably, the driving mechanism further comprises a rack arranged at the top of the ore dressing tank, a driving motor arranged on the rack, a driving wheel arranged on an output shaft of the driving motor, a driven wheel driven by a belt, and a transmission assembly arranged on the rack and sleeved on the transmission shaft; the top of the transmission shaft penetrates through the center of the driven wheel to realize connection.

Preferably, the transmission assembly comprises a bearing body arranged in the middle of the rack and at least one bearing arranged in the bearing body.

The utility model has the advantages that:

the ore dressing machine and the intelligent ore dressing method adopting the structure not only have the advantages of simple structure, high ore dressing efficiency, good operation stability and the like, but also realize ore dressing without adding other chemical agents by using water as an ore dressing medium, and can meet the modern green and environment-friendly requirement. The ore dressing machine passes through the bolster and will be located the ore pulp slew velocity decline of ore dressing jar middle and upper strata, makes it be in relative quiescent state, and the upwelling that produces for the ore pulp makes the flotation that low density ore pulp can be quick, avoids high density mineral because of the rotatory come-up that drives of ore pulp, and then follows the condition that the overflow mouth flowed in the lump, has improved the ore dressing precision greatly. The concentrating machine with the structure fully utilizes the movement difference of unsteady flow of particles with different mineral densities and sizes in water to realize the aim of separation according to the mineral density difference, the high-density mineral particles are arranged at the lower part of the concentrating tank, the high-density mineral particles are discharged to downstream equipment or a working procedure through the ore discharge mechanism, the flow velocity of ore pulp in the ore dressing tank is reduced to be in a relatively static state through the buffer piece, the re-mixing of layered minerals with various densities is effectively prevented, so that the low-density mineral quickly floats upwards and flows out of an overflow port positioned at the upper part of the mineral separation tank, thereby realizing the purpose of mineral separation, when the content of the minerals for the sorting purpose is less than 5%, the overflow ore pulp takes away the amount of the high-density minerals, which is less than 1% of the amount of the minerals, so that the sorting precision of the gravity concentrator is greatly improved, and the applicable range of the concentrator is wider; simultaneously because the inertia of first impeller is little, in addition first impeller is rotatory in the ore pulp swirl, because rotatory ore pulp vortex core energy is low, the high motion that can be low to the energy of energy, otherwise, then the opposite direction motion helping hand can increase, and reverse helping hand has the effect of eliminating vibrations, realizes dynamic balance easily to improve the intensity of motion of ore pulp easily, make the utility model discloses can be applied to the mineral of sorting density difference is little, enlarged the range of application of gravity ore dressing. Adopt the utility model provides a concentrator carries out the ore dressing, when the purpose mineral content is less than 5%, the low density ore volume that flows from overflow mouth 420 is the half of the volume of giving the ore deposit, so, ore dressing efficiency is higher, and can directly discharge the ore pulp of low density mineral after the primary election, has reduced follow-up ore dressing volume, and then has reduced the installed capacity of follow-up equipment. Adopt the utility model provides a concentrator carries out the ore dressing, need not hierarchical entering and selects, can not mix in grades to the mineral particle that is less than 370 microns monomer dissociation and select, has simplified the flow that mineral was selected in grades and selected gravity ore dressing greatly. Adopt the utility model provides a concentrator carries out the ore dressing, is favorable to the management of ore grinding and dissociation degree, comes from in the ore pulp of upper reaches, often can contain the more low density granule that is greater than the requirement of monomer dissociation degree, and traditional concentrator needs to grind to this part ore pulp and just can carry out the ore dressing after the demand size, and the utility model provides an usable even health of concentrator, the density difference characteristics of inclusion mineral self, along with certain section overflow ore pulp is elected in the middle of the ore dressing flow, returns to the ore grinding flow and regrinding the back and reacquiring and dissociating, has reduced the ore grinding volume, has reduced the degree of difficulty of dissociation degree management. The concentrating machine of the utility model is added at the most front section of the traditional flotation and mineral separation process, the tail can be thrown in advance, the mineral separation agent consumption of the subsequent flotation and the total amount of mineral separation volume are reduced, and the mineral separation efficiency and the separation precision can be greatly improved through the combined operation of a plurality of machines; and secondly, because the gravity separation is carried out according to the density difference of minerals, the problem that the minerals with poor hydrophobicity are difficult to recover during the flotation and the mineral separation can be effectively avoided.

Drawings

The advantages and mode of realisation of the invention will become more apparent hereinafter by describing in detail the invention with reference to the attached drawings, wherein the content shown in the drawings is only for explaining the invention, without constituting any limitation to the meaning of the invention, in which:

fig. 1 is a schematic view of a concentrator in an embodiment of the invention;

fig. 2 is a schematic view of a concentrator in an embodiment of the invention;

fig. 3 is a schematic view of a mine discharge mechanism in an embodiment of the present invention;

fig. 4 is a schematic view of a first impeller in an embodiment of the invention;

fig. 5 is a schematic view of a first impeller in an embodiment of the invention;

fig. 6 is a schematic view of a first impeller in an embodiment of the invention;

fig. 7 is a schematic diagram of a first impeller according to an embodiment of the present invention.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely used for simplifying the description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and 2, the present invention provides a concentrating machine, which includes a concentrating tank 100 having a feeding port 110, a driving mechanism 200 disposed at the top of the concentrating tank 100, a transmission shaft 210 driven by the driving mechanism 200 and disposed at the center of the concentrating tank 100, a high-density mineral sorting mechanism 300 disposed at the bottom of the transmission shaft 210, and a medium-low density mineral sorting mechanism 400 disposed above the high-density mineral sorting mechanism 300;

the high-density mineral separation mechanism 300 comprises a first impeller 310 arranged at the bottom of a transmission shaft 210;

the medium-low density mineral separation mechanism 400 comprises a damping component 410 which is arranged at the upper part of the first impeller 310 and is used for reducing the motion intensity of ore pulp, at least one overflow port 420 which is arranged at the upper part of the beneficiation tank 100, and a middling box 430 which is arranged on the outer wall of the middle part of the beneficiation tank 100 and is communicated with the beneficiation tank 100; the damper assembly 410 includes a buffer member 411 provided at an upper portion of the first impeller 310. The overflow port 420 is a rectangular opening that is horizontally disposed in the longitudinal direction, and the diameter of the buffer 411 is larger than that of the first impeller 310. The distance from the bottom edge of the buffer 411 to the bottom of the beneficiation tank 100 is smaller than the distance from the top edge of the first impeller 310 to the bottom of the beneficiation tank 100, and of course, the buffer 411 may also be disposed above the first impeller 310, which is not particularly limited herein. This feed inlet 110 is equipped with the open-ended feed box including locating on the 100 outer walls of ore dressing jar and upper portion, and locates on the 100 outer walls of ore dressing jar and be located the third through-hole of the bottom of feed box, this feed box pass through the third through-hole with ore dressing jar 100 realizes the intercommunication. The height of the third through hole is not more than the height of the first impeller 310 from the inner wall of the bottom of the mineral processing tank 100. In this embodiment, the buffer 411 has an annular shape. The middling box 430 comprises a box body, a hand wheel and a gate, the middling box 430 is uncovered and is installed at the middle-upper section of the outer wall of one side of the mineral separation tank 100, the lower part of the middling box 430 is communicated with the mineral separation tank 100 through a through hole, and the height from the center of the through hole to the bottom of the mineral separation tank 100 is less than or equal to the height from an impeller to the bottom of the mineral separation tank 100; the accessible rotates the hand wheel on the middling case 430, drives the flashboard and reciprocates, and then realizes adjusting the purpose of middling ore pulp outflow, distributes overflow pulp outflow simultaneously, guarantees that low density ore pulp can follow overflow mouth 420 outflow.

Further, be equipped with a plurality of first through-holes 412 on bolster 411 to be located the flow of the inside and outside ore pulp of bolster 411, and then make by the speed reduction and be located the inside and outside overflow of ore pulp of bolster 411, and then reduce the intensity of motion of upper ore pulp fast.

Further, the damping assembly 410 further includes an isolation tube 413 disposed above the buffer 411 and sleeved outside the transmission shaft 210; the separation pipe 413 is connected to the beneficiation tank 100 through an adjusting member 414. The inner diameter of the isolation pipe 413 is 0.2 to 3 times the diameter of the first impeller 310, and more preferably 1.0 to 1.6 times the diameter of the first impeller 310. The situation that the transmission shaft 210 rotates to drive the ore pulp on the upper layer to rotate is further eliminated through the isolation pipe 413, so that the minerals with medium and low density flow out of the overflow port 420 quickly. The adjusting member 414 includes a positioning hole on the driving mechanism 200, and a bolt having one end fixed to the isolation tube 413 and the other end passing through the positioning hole to be detachably connected to the driving mechanism 200. Because the driving mechanism 200 is arranged at the top of the beneficiation tank 100, the connection between the adjusting piece 414 and the beneficiation tank 100 is realized.

Further, a first flow guide element 415 is arranged below the buffer element 411, and the inner diameter of the first flow guide element 415 gradually increases from top to bottom along the vertical direction, so as to form a horn shape, so that the energy of the ore pulp is guided downwards, and the isolation of the high-density ore pulp and the low-density ore pulp area is further facilitated.

Further, the bottom end of the first flow guiding member 415 is provided with a second through hole to prevent the slurry from forming stirring at the edge of the first flow guiding member 415, so that the energy of the slurry can be rapidly conducted downwards.

Further, the high-density mineral sorting mechanism 300 further includes a second annular flow guiding member 320 disposed at the bottom of the transmission shaft 210; the inner diameter of the second flow guide part 320 can be larger than, equal to or smaller than the diameter of the first impeller 310, that is, as long as the high-density minerals can flow to the bottom of the beneficiation tank 100 rapidly along the second flow guide part 320, the high-density minerals are prevented from floating upwards under the driving of the first impeller 310, and the beneficiation accuracy is improved. Preferably, the inner diameter of the second flow guide 320 does not change along the vertical direction, or the inner diameter of the second flow guide 320 gradually increases from top to bottom along the vertical direction. The second diversion member 320 is detachably arranged on the inner wall of the bottom of the ore dressing tank 100 through a connecting member 321. The connecting piece 321 comprises a fixed base arranged at the bottom of the mineral separation tank 100, a screw rod with one end fixed at the bottom of the mineral separation tank 100 and the other end penetrating through the fixed base, and a screw cap arranged at the end of the screw rod and provided with an internal thread; and the screw rod is provided with an external thread matched with the internal thread of the screw cap.

Further, the first impeller 310 includes a hub 311 coaxially driven with the driving shaft 210, and at least two blades 312 disposed along an outer wall of the hub 311; the blades 312 are radially connected to the outer wall of the hub 311; the working rotation center line is vertical to the horizontal plane and is superposed with the center line of the beneficiation tank 100; the installation angle of the blade 312 and the cross section of the hub 311 is 30 ︒ -120 ︒.

Further, as shown in fig. 4, a vertical cross section of the blade 312 is polygonal, a cross section of the blade 312 may be triangular, parallelogram, rectangular, trapezoid or arc, and is not specifically limited herein, one side of the polygon is attached to an outer wall of the hub 311, a width of the blade is equal to or narrow from top to bottom along a vertical direction, and a design rotation speed of the first impeller 310 is such that a relative centrifugal force generated at a radial end of the blade 312 is not less than 5G.

The ore discharging mechanism is arranged at the bottom of the ore dressing tank; the ore discharging mechanism comprises a truncated cone fixed with the ore dressing tank, a flange plate arranged on the bottom end of the truncated cone, a central cone arranged on the flange plate and provided with a fixing hole in the middle, an aligning device penetrating through the fixing hole and connected with the central cone, a connecting part arranged below the flange plate and communicated with the bottom of the ore dressing tank, and a discharging assembly arranged at the bottom end of the connecting part; the bottom of the connecting part and the bottom of the cone frustum are provided with at least one visible window; the discharging assembly comprises a shell communicated with the connecting portion, a second impeller arranged on the shell, a discharging motor driving the second impeller to rotate and arranged on the shell, and a discharging port arranged at the bottom of the shell.

Further, as shown in fig. 3, the system further includes a mineral discharging mechanism 500 disposed at the bottom of the mineral processing tank 100; the ore discharging mechanism 500 comprises a truncated cone 510 fixed with the ore dressing tank 100, a flange 520 arranged on the bottom end of the truncated cone 510, a central cone 530 arranged on the flange 520 and provided with a fixing hole in the middle, an aligning device 540 penetrating through the fixing hole and connected with the central cone 530, a connecting part 550 arranged below the flange 520 and communicated with the bottom of the ore dressing tank 100, and a discharging assembly 560 arranged at the bottom end of the connecting part 550; the connecting part 550 and the bottom of the truncated cone 510 are both provided with at least one visible window 551; the discharging assembly 560 comprises a housing 561 communicated with the connecting portion 550, a second impeller 562 arranged on the housing 561, a discharging motor driving the second impeller 562 to rotate and arranged on the housing 561, and a discharging port 563 arranged at the bottom of the housing 561. Through centre cone 530 and self-aligning ware 540, can accelerate the quick outflow of high density mineral through ore discharge mechanism 500, avoid the high density mineral and then drive the come-up under the stirring of first impeller 310. A visible window 551 is arranged on the connecting part 550; at least one visual window 551 is arranged at the bottom of the truncated cone 510 near the flange 520.

Further, the driving mechanism 200 includes a frame 220 disposed at the top of the mineral separation tank 100, a driving motor 230 disposed on the frame 220, a driving wheel 240 disposed on an output shaft of the driving motor 230, a driven wheel 250 driven by a belt, and a transmission assembly 260 disposed on the frame 220 and sleeved on the transmission shaft 210; the top of the driving shaft 210 passes through the center of the driven wheel 250 to achieve connection.

Further, the transmission assembly 260 includes a bearing body 261 disposed in the middle of the frame 220, and at least one bearing 262 disposed in the bearing body 261.

The concentrator of above-mentioned structure has advantages such as simple structure, ore dressing are efficient, operating stability is good, and the concentrator uses water as the ore dressing medium, need not to add chemical agent and can realize the ore dressing, can satisfy modern green demand. The ore pulp rotating speed of the upper layer of the ore dressing tank 100 is reduced through the buffer piece 411, so that the ore pulp is in a relatively static state, upward flow generated by ore pulp is fed, then the low-density ore pulp can quickly float, high-density minerals are prevented from floating due to rotation of the ore pulp, the upper layer of the ore pulp flows out from the overflow port 420, and the ore dressing precision is greatly improved. The concentrator with the structure fully utilizes the movement difference of unsteady flow of particles with different mineral densities and sizes in water, the purpose of sorting according to the mineral density difference is realized, the high-density mineral particles are arranged at the lower part of the mineral separation tank 100, the high-density mineral particles are discharged to a downstream device or a process through the ore discharge mechanism 500, the flow velocity of ore pulp in the mineral separation tank 100 is reduced through the buffer piece 411, and then low-density minerals float up quickly and flow out from the overflow port 420 positioned at the upper part of the mineral separation tank 100, so that the purpose of mineral separation is realized, the concentrator adopts the utility model, when the concentrator is used for separating minerals with the mineral content of less than 5 percent, the amount of the high-density minerals is taken away by the overflow, the ore pulp is less than 1 percent of the total amount of the high-density minerals, and the mineral separation precision of the gravity concentrator is greatly improved; simultaneously because first impeller 310's inertia is little, and the impeller is at ore pulp swirl internal rotation in addition, rotatory ore pulp vortex core energy is low, and the energy is high can be to the motion that the energy is low, otherwise, the opposite direction motion helping hand can increase, and reverse helping hand has the effect of eliminating vibrations, realizes dynamic balance easily to the intensity of motion of ore pulp has been improved easily, makes the utility model discloses can be applied to the mineral of sorting density difference little, enlarged the range of application of gravity ore dressing. Adopt the utility model provides a concentrator carries out the ore dressing, when the purpose mineral content is less than 5%, the low density ore volume that flows from overflow mouth 420 is the half of the volume of giving the ore deposit, so, ore dressing efficiency is higher, and can directly discharge the ore pulp of low density mineral after the primary election, has reduced follow-up ore dressing volume, and then has reduced the installed capacity of follow-up equipment. Adopt the utility model provides a concentrator carries out the ore dressing, need not hierarchical entering and selects, can not mix in grades to the mineral particle that is less than 370 microns monomer dissociation and select, has simplified the flow that mineral was selected in grades and selected gravity ore dressing greatly. Adopt the utility model provides a concentrator carries out the ore dressing, is favorable to the management of ore grinding and dissociation degree, comes from in the ore pulp of upper reaches, often can contain the more low density granule that is greater than the requirement of monomer dissociation degree, and traditional concentrator needs to grind to this part ore pulp and just can carry out the ore dressing after the demand size, and the utility model provides an usable even health of concentrator, the density difference characteristics of inclusion mineral self, along with certain section overflow ore pulp is elected in the middle of the ore dressing flow, returns to the ore grinding flow and regrinding the back and reacquiring and dissociating, has reduced the ore grinding volume, has reduced the degree of difficulty of dissociation degree management. The concentrating machine of the utility model is added at the most front section of the traditional flotation and mineral separation process, the tail can be thrown in advance, the mineral separation agent consumption of the subsequent flotation and the total amount of mineral separation volume are reduced, and the mineral separation efficiency and the separation precision can be greatly improved through the combined operation of a plurality of machines; and secondly, because the gravity separation is carried out according to the density difference of minerals, the problem that the minerals with poor hydrophobicity are difficult to recover during the flotation and the mineral separation can be effectively avoided.

Specific example 2

This embodiment also provides a concentrator having a structure substantially the same as that of embodiment 1, except that:

as shown in fig. 5 and 6, the vertical section of the blade 312 is composed of at least 2 different kinds of polygonal pieces; one edge of one polygonal sheet is attached to the outer wall of the hub 311, and the width of the blade 312 is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction. The cross section of the blade 312 may be formed by a right trapezoid and a rectangle, may also be formed by a triangle and a right trapezoid, and may also be formed by a triangle and a rectangle, which is not limited herein. The buffer 411 is an annular structure formed by connecting at least one buffer plate end to end.

Specific example 3

This embodiment also provides a concentrator having a structure substantially the same as that of embodiment 1, except that:

as shown in fig. 5 to 7, the vertical section of the blade 312 is composed of polygonal sheets having at least 2 areas different from each other. One edge of one polygonal sheet is attached to the outer wall of the hub 311, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction. The cross section of the blade 312 may be composed of two or more squares with different areas, may also be composed of two or more rectangles with different areas, and may also be composed of 2 or more right-angled trapezoids with different areas, which is not limited herein.

Further, the adjusting member 414 includes at least one adjusting hole disposed on the isolation tube 413, a screw rod adapted to the adjusting hole and having one end fixed to the inner wall of the isolation tube 413, and an adjusting nut adapted to the screw rod and having an internal thread; the other end part of the screw rod passes through the adjusting hole; the end part of the screw rod, which is close to one side of the adjusting hole, is provided with an external thread matched with the internal thread of the adjusting nut.

Specific example 4

This embodiment also provides a concentrator having a structure substantially the same as that of embodiment 1, except that:

the blade 312 is followed the outer wall of wheel hub 311 is the heliciform, just the width of blade keeps unanimous from top to bottom, or the width of blade from top to bottom crescent, is the pivoted purpose that the spiral helicine blade 312 also can realize driving the ore pulp, and then makes the quick enrichment of high density mineral in the bottom of ore dressing jar 100.

Further, as shown in fig. 4, the top of the blades 312 is provided with a top plate 313 to prevent the high-density minerals from floating upward, conduct the energy of the slurry outside the impeller downward, and guide the high-density minerals to the bottom of the beneficiation tank 100.

Further, the internal diameter of first water conservancy diversion piece 415 increases progressively from last to bottom along vertical direction, the bottom of first water conservancy diversion piece 415 is equipped with the second through-hole to in with the energy of ore pulp guide downwards, be favorable to further keeping apart high density and low density ore pulp region, reduce the rotatory speed that drives the ore pulp pivoted of first impeller 310 fast.

Specific example 5

The sensor is arranged on the visual window.

The embodiment provides an intelligent ore dressing method applied to an ore dressing machine, the method controls the ore dressing machine to perform intelligent ore dressing through an intelligent control system, the intelligent control system comprises a central computer, at least one detection computer electrically connected with the central computer, at least one first sensor arranged at the lower part of the cone frustum 510 and connected with the detection computer, a motor controller connected with the discharging motor, a frequency converter connected with the driving mechanism 200, and a 485 communication circuit arranged on the central computer and/or the detection computer; the central computer and the detection computer are both internally provided with watchdog software, the first sensor is arranged on a visible window 551 at the bottom of the cone frustum 510 and used for detecting the motion intensity value of the ore pulp and the RGB value of the ore pulp passing through the position, and the preferred model of the first sensor is TCS 3200; the first sensor is electrically connected with the detection computer, the preferred model of the central computer is STC15W4K32S4, and the central computer is electrically connected with the motor controller and the frequency converter; the detection computer comprises a data acquisition unit connected with the first sensor and a data processing unit connected with the data acquisition unit; the program is prevented from running away through a watchdog; the preferred model of the detection computer is STC15W4K32S4, and the method comprises the following steps:

the detection computer uploads the comparison result to the central computer once every time T: the comparison result is obtained by the data processing unit on the detection computer, the data processing unit receives the sensor data obtained by the data acquisition unit, the data acquisition unit obtains the sensor data on the first sensor once every time interval T1, and the data processing unit compares the sensor data with preset data arranged on the data processing unit and obtains the comparison result; the preset data comprises a first parameter which is compared with the RGB value acquired by the first sensor and is used for judging the enrichment condition of the high-density mineral in the ore discharging mechanism, a deviation threshold which is used for measuring the maximum range that the RGB value acquired by the first sensor can deviate from the first parameter, a deviation grade which is used for measuring the degree that the RGB value deviates from the first parameter, and a second parameter which is compared with the pulp motion intensity value acquired by the first sensor and is used for judging the pulp motion intensity; the comparison result comprises whether the RGB value exceeds a deviation threshold value or not, the deviation grade of the RGB value and a second parameter which is compared with the pulp motion strength obtained by the first sensor;

the detection computer judges whether the RGB value acquired by the first sensor is within a deviation threshold value;

if the comparison result is yes, the central computer controls to start the discharging motor;

if the comparison result is negative, the central computer controls to stop the discharging motor;

the detection computer compares the real-time RGB value acquired by the data acquisition unit with the preset data and judges which deviation grade the real-time RGB value belongs to, and the central computer adjusts the rotation speed of the discharging motor according to the preset motor rotation speed corresponding to the deviation grade; the deviation level is used for measuring the deviation degree of the RGB value from the first parameter.

Further, the method further comprises the steps of:

the data processing unit of the detection computer judges whether the difference value between the ore pulp motion intensity obtained by the first sensor and the second parameter is zero;

if the difference value is zero, the central computer controls to keep the output frequency of the frequency converter unchanged;

if the difference value is larger than zero, the central computer controls to reduce the output frequency of the frequency converter;

and if the difference value is smaller than zero, the central computer controls to increase the output frequency of the frequency converter.

The intelligent control of the concentrating machine is realized through the intelligent concentrating method, the color information of target minerals is intelligently identified through the first sensor, the motion intensity of ore pulp is obtained through the first sensor, the obtained sensor data is analyzed and judged through the detection computer, and then the PID speed regulation control and the control of the work of the concentrating mechanism 500 are carried out by sending an instruction to the frequency converter or the concentrating motor through the central computer, so that the concentrating machine is intelligently controlled in concentrating grade, high-quality high-density minerals are separated, the operation of the concentrating machine is smoother and simpler, and the concentrating efficiency is higher.

Specific example 6

In a certain dressing plant in east Sichuan area of Kunming city, Yunnan province, the dressing plant processes 400 tons of copper ore daily, the grade of the whole copper of the selected raw ore is 0.6%, the mud content of the copper ore is high, the oxidation rate of the copper is about 80%, wherein the binding rate is about 60%, the content of easy-to-float gangue is large, the quality of the concentrate obtained by the currently used common dressing machine is poor, the types of required dressing agents are large, the consumption of the dressing agents is large, the price of the agents is high, and the recovery rate is only 50%;

in order to verify the use condition of the utility model, before entering the flotation process, the concentrator in the above embodiment of a 3 cubic meter is stringed and used for mineral separation, after the concentrator is used for mineral separation, the copper grade of the tailings discharged from the overflow port 420 is 0.005 percent, and the amount of the overflow pulp is 50 percent of the amount of the fed pulp; the middling of the concentrator enters the original flotation flow to continue the flotation and mineral separation operation, because the pulp amount is reduced by 50%, the flotation time is doubled, the medicament effect of refractory oxidized ore is enhanced, the mud quality is greatly reduced, the consumption of the beneficiation reagent by the mud is greatly reduced, the medicament consumption is reduced by about thirty percent, if the flotation recovery rate is examined independently, the flotation recovery rate is improved by 2% compared with the prior art, the total tailing recovery rate formed by pre-separation of tailing throwing and flotation tailing is 74%, and the flotation recovery rate is improved by 24% compared with the prior art.

The preferred embodiments of the present invention have been described with reference to the accompanying drawings, and those skilled in the art can implement the present invention in various modifications without departing from the scope and spirit of the present invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the specification and the drawings of the present invention are included in the scope of the present invention.

Claims (14)

1. A concentrating machine is characterized by comprising a concentrating tank with a feeding hole, a driving mechanism arranged at the top of the concentrating tank, a transmission shaft driven by the driving mechanism and arranged at the center of the concentrating tank, a high-density mineral sorting mechanism arranged at the bottom of the transmission shaft, and a medium-low density mineral sorting mechanism arranged above the high-density mineral sorting mechanism;

the high-density mineral sorting mechanism comprises a first impeller arranged at the bottom of a transmission shaft;

the medium-low density mineral separation mechanism comprises a damping assembly, at least one overflow port and a middling box, wherein the damping assembly is arranged on the upper portion of the first impeller and used for reducing the movement strength of ore pulp; the damping assembly includes a buffer member disposed at an upper portion of the first impeller.

2. A concentrator as claimed in claim 1, wherein the buffer is provided with a plurality of first through holes.

3. A concentrator as claimed in claim 1, wherein the damper assembly further includes an isolation tube disposed above the buffer and sleeved outside the drive shaft; the isolation pipe is connected with the ore dressing tank through an adjusting piece.

4. A concentrator as claimed in claim 1, wherein a first deflector is provided below the buffer; the inner diameter of the first flow guide piece gradually increases from top to bottom along the vertical direction.

5. A concentrator as claimed in claim 4, wherein the bottom end of the first deflector member is provided with a second through-hole.

6. A concentrator as claimed in claim 1, wherein the high density mineral separation mechanism further includes a second annular deflector member disposed at the bottom of the drive shaft; the inner diameter of the second flow guide piece is unchanged along the vertical direction, or the inner diameter of the second flow guide piece gradually increases from top to bottom along the vertical direction.

7. A concentrator as claimed in claim 1, wherein the first impeller includes a hub coaxially driven with the drive shaft, and at least two blades disposed along an outer wall of the hub; the installation angle between the blade and the cross section of the hub is 30 ︒ -120 ︒.

8. A concentrator as claimed in claim 7, wherein the vertical cross-section of the vanes is polygonal; one side of the polygon is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

9. A concentrator as claimed in claim 7, wherein the vertical cross-section of the blade is made up of at least 2 different kinds of polygonal sheets; one edge of one polygonal sheet is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

10. A concentrator as claimed in claim 7, wherein the vertical cross-section of the blades is comprised of at least 2 polygonal sheets of different areas; one edge of one polygonal sheet is attached to the outer wall of the hub, and the width of the blade is equal from top to bottom or is narrow at the top and wide at the bottom along the vertical direction.

11. A concentrator as claimed in claim 7, wherein the blades are helical along the outer wall of the hub and the width of the blades is constant from top to bottom or the width of the blades increases progressively from top to bottom.

12. A concentrator as claimed in any one of claims 1 to 11 further comprising a mine drainage mechanism provided at the bottom of the concentrating tank; the ore discharging mechanism comprises a truncated cone fixed with the ore dressing tank, a flange plate arranged on the bottom end of the truncated cone, a central cone arranged on the flange plate and provided with a fixing hole in the middle, an aligning device penetrating through the fixing hole and connected with the central cone, a connecting part arranged below the flange plate and communicated with the bottom of the ore dressing tank, and a discharging assembly arranged at the bottom end of the connecting part; the bottom of the connecting part and the bottom of the cone frustum are provided with at least one visible window; the discharging assembly comprises a shell communicated with the connecting portion, a second impeller arranged on the shell, a discharging motor driving the second impeller to rotate and arranged on the shell, and a discharging port arranged at the bottom of the shell.

13. A concentrating machine according to any one of claims 1 to 11, wherein the drive mechanism further includes a frame mounted on the top of the tank, a drive motor mounted on the frame, a drive wheel mounted on an output shaft of the drive motor, a driven wheel driven by a belt, and a drive assembly mounted on the frame and mounted on the drive shaft; the top of the transmission shaft penetrates through the center of the driven wheel to realize connection.

14. A concentrator as claimed in claim 13, wherein the drive assembly includes a bearing body disposed in a central portion of the frame, and at least one bearing disposed in the bearing body.

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